Natural Curbstone material characteristics and advantage analysis

Curbstone is a kind of high-grade building decoration materials, mainly is the adornment effect, Curbstone material is the earliest human

development history of building materials, there are tens of thousands of years of history, because of its natural beauty, decorated with

human of indoor and outdoor environment, in the ancient and modern, Chinese and foreign constructionHistory has left a lot of Curbstone building work.1. The fire resistanceAll kinds of Curbstone material is different, some Curbstone in high temperature, under the action of chemical decomposition happened.(1) gypsum: more than 107 C in the decomposition.(2) the limeCurbstone, marble: more than 910 c in the decomposition.(3) granite: in 600 C due to uneven heating of mineral and crack.2. Frost resistanceTo degrees below zero and in frozen, internal pore water expansion than original volume big 1/10, rock if can't resist this expansion force

of what had happened, they will be failure. A prajna bibulous rate is less than 0.5%, they did not consider the frost resistance.3. Expansion and contractionCurbstone material is also heat bilges cold shrink, but if heated after cooling, the contraction can't reply to the original volume, and will

keep part of the permanent inflation; The United States Arsenal have test by 00 c to 1000 c, then to 00 c, measure permanent expansion

load area, load effect and cleavage to factors such as the Angle, and different. If other conditions are the same, usually crystal grain size

is very fine and each other a bondThe density of the material, with high strength. Dense volcanic rocks in the dry and saturated moisture content, compressive strength and no

difference (bibulous rate is very low), if is porous and afraid of water, and the dry cement rock and damp the strength, there is significant

difference.Building decorative Curbstone material is natural Curbstone and artificial Curbstone two categories, and natural Curbstone material is given

priority to, it is a kind of advanced decorative materials, mainly used for adornment grade demanding engineering, artificial Curbstone

belongs to low grades of decoration materials, only in the medium and low grade of interior decoration engineering.The so-called marble is refers to the deposit or bad carbonate rock, marble, dolomite, limestone, sandstone, shale and SLATE, etc. As China's

famous white marble is Beijing fang shan magmatic produce of dolomite, yunnan marble is produced in largeIn the marble, the famous dandong green is serpentine change silicon card rock. Also, as a Curbstone production all kinds of magmatic rock,

such as granite, andesite, diabase, green long rock and gneiss etc called granite. Such as Beijing white tiger gorge white flowersThe Curbstone is granite, jinan blue is gabbro, and Qingdao black granite is diabase.Artificial Curbstone is a kind of synthetic decoration materials. According to the binder is different, can be divided into organic kind of

artificial Curbstone and inorganic kind of artificial Curbstone two kinds. According to the production process of a different process, and

can be divided into polyester type artificial marble, compositeType artificial marble, silicic acid salt type artificial marble, sintering type artificial marble four types.Marble is a little blue, also called BingNa G654. The little blue for the pingnan road development under a development of the new Curbstone

products in small sapphire Curbstone with small blue SPAR point is also called "blue star light". And because like import "rime ice flowers",

so it is the domestic "rime ice flowers" reputation. Mainly used for exterior wall, mesa, outdoor plaza (fire board). Is a building